Again, as noted on the support email, you have to supply a 64bit version. Take a look at the multi-bitrate Video On Demand sections of these guides:
Video on Demand
http://community.wowza.com/t/-/64
Live Streaming
https://www.wowza.com/docs/how-to-set-up-live-streaming-using-an-rtmp-based-encoder
And apply the latest patch in any case.
Richard